I just purchased a 1984 300SD and it came with a grill badge that I can not find online anywhere. I want to know what it is for (car club, fun?)

I cant imagine the person who owned it before me put it on there. She was the only other owner of the car, bought it new! She's about 80 years old now and has too many health problems to drive anymore (which meant I got a great deal on a garage kept Benz!) This would mean that she bought the car when she was around 50 when she bought it. I dont know, maybe she DID put the grill badge on it.